Patents by Inventor Alexander Craig Mackay
Alexander Craig Mackay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7370708Abstract: A seal arrangement comprises an expandable inner tubular and an outer tubular. The inner tubular comprises an axially extending lip seal. Expansion of the inner tubular serves to energise the lip seal, a free end of which will be urged into contact with the outer tubular.Type: GrantFiled: July 29, 2004Date of Patent: May 13, 2008Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig Mackay, Robert Cowman
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Patent number: 7367404Abstract: A method of forming a seal between two tubular members comprising providing a first tubular member having an internal surface and an external surface describing a first diameter, with a recess in the external surface at a seal portion of the first tubular member. A deformable circumferentially extending sealing member is located in the recess, the sealing member describes an external diameter no greater than the first diameter. The first tubular member is located within a second tubular member and the seal portion of the first tubular member is expanded such that the sealing member engages an inner surface of the second tubular member.Type: GrantFiled: November 16, 2004Date of Patent: May 6, 2008Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig Mackay
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Patent number: 7322420Abstract: An apparatus and a method for expanding a downhole tubular. The apparatus includes a mandrel defining at least one curved support surface. The apparatus further includes an expansion member defining a curved bearing surface for contact with the support surface and corresponding to the mandrel support surface. The expansion member is movable relative to the mandrel, whereby the surfaces are in contact and movable over one another to move the expansion member from a smaller diameter first configuration towards a larger diameter second configuration.Type: GrantFiled: February 26, 2004Date of Patent: January 29, 2008Assignee: Weatherford/Lamb, Inc.Inventors: Duncan James Trinder, Neil Andrew Abercrombie Simpson, John Strachan Nicoll, Graham MacKay, Alexander Craig MacKay
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Patent number: 7219745Abstract: An apparatus and methods for preventing the accumulation of unwanted materials in an enlarged inner diameter portion of a casing or housing. In one aspect of the invention, a sleeve is disposed in the housing to isolate an annular area defined by the outer surface sleeve and the wall of the enlarged inner diameter portion. The sleeve prevents unwanted materials from being disposed in the annular area. The sleeve can later be expanded into the enlarged inner diameter portion, removed from the wellbore or destroyed. In another aspect of the invention, the sleeve is provided and disposed to cover the enlarged inner diameter portion. By covering the enlarged inner diameter portion, unwanted material is prevented from accumulating at said portion and from interfering with the expansion of the next casing into said portion to form a monobore. The sleeve can be made from materials that are dissolvable, elastically deformable, or retrievable.Type: GrantFiled: December 6, 2005Date of Patent: May 22, 2007Assignee: Weatherford/Lamb, Inc.Inventor: Alexander Craig Mackay
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Patent number: 7172027Abstract: A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion may be utilised to anchor or seal the tubing within a larger bore. The buckled portion may be used to anchor the tubing within the wellbore prior to expansion of the length of the tubing into the wellbore.Type: GrantFiled: June 10, 2003Date of Patent: February 6, 2007Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig Mackay, David Graham Hosie, Ken Whanger, Robert Badrak
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Patent number: 7140442Abstract: A tubing injector for injecting tubing (4) into a pipeline or bore or the like comprises: an annular piston for moving the tubing (4); a collet for gripping the tubing on movement of the piston in an injecting direction, the collet (14) and the tubing being movable with the piston, and the collet being releasable from the tubing (4) on movement of the piston in another direction, and a ratchet collet for preventing the tubing from being ejected.Type: GrantFiled: March 19, 2003Date of Patent: November 28, 2006Assignee: Weatherford/Lamb, Inc.Inventors: Alexander Craig Mackay, Neil Andrew Abercrombie Simpson
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Patent number: 7140444Abstract: There is disclosed a method of forming a tubing lined borehole, the method comprising the steps of forming a borehole; enlarging part of the borehole by increasing the diameter thereof; and locating bore-lining tubing in the borehole with at least part of the tubing located in the enlarged part of the borehole, and a corresponding a tubing lined borehole. There is also disclosed a downhole cutting tool comprising a tool body; and at least one cutting element mounted for radial movement with respect to the tool body between a retracted position and a cutting position, in the cutting position the cutting element describing a cutting diameter and an axially extending annular space inwardly of the cutting element, and a corresponding method.Type: GrantFiled: December 23, 2003Date of Patent: November 28, 2006Assignee: Weatherford/Lamb, IncInventor: Alexander Craig Mackay
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Patent number: 7090024Abstract: A method of anchoring tubing in a bore comprising: providing tubing having a section with outer surface portions defining a tubing profile, and configured to describe an outer diameter less than a first diameter. The tubing is located within a bore having an internal diameter equal to the first diameter and defining a bore profile. The tubing is then reconfigured such that the tubing profile engages with the bore profile, anchoring the tubing within the bore.Type: GrantFiled: May 2, 2003Date of Patent: August 15, 2006Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig MacKay, Graham MacKay, Duncan James Trinder
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Patent number: 7086480Abstract: A method of anchoring tubing in a bore comprises: providing first tubing having a section with a wall configured to provide outer surface portions describing a diameter less than a first diameter. The tubing is located within a bore comprising a first section having an internal diameter greater than the first diameter and a second section having an internal diameter corresponding to the first diameter, with the tubing section in the first section of the bore. The tubing section is then reconfigured such that the outer surface portions describe a tubing diameter greater than the first diameter. The tubing is then axially translated relative to the bore to locate the tubing section in the second section of the bore such that the outer surface portions are restrained to the first diameter by the bore, and the outer surface portions engage with the bore.Type: GrantFiled: May 2, 2003Date of Patent: August 8, 2006Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig Mackay, Graham Mackay, Duncan James Trinder
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Patent number: 7077210Abstract: A method of expanding tubing downhole comprises the steps of: providing tubing (14;44) of a first diameter; running the tubing into a bore (10;40); expanding a first section of the tubing to a second diameter, and expanding a second section of the tubing to a third diameter.Type: GrantFiled: July 9, 2003Date of Patent: July 18, 2006Assignee: Weatherford/Lamb, Inc.Inventors: Alexander Craig MacKay, Neil Andrew Abercrombie Simpson
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Patent number: 7073602Abstract: Apparatus for injecting coiled tubing into a bore comprises a rotatable housing (28, 29) having an axis along which coiled tubing is to be translated. A set of rolling elements (12, 14) is rotatably mounted in the housing (28, 29), each rolling element (24) having a skewed axis of rotation with respect to the housing axis and being arranged for rolling contact with an outside diameter of the coiled tubing. The arrangement is such that rotation of the housing (28, 29) relative to the tubing causes the tubing to be moved axially through the rotating housing.Type: GrantFiled: July 19, 2001Date of Patent: July 11, 2006Assignee: Weatherford/LambInventors: Neil Andrew Abercombie Simpson, Alexander Craig Mackay
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Patent number: 6971450Abstract: An apparatus and methods for preventing the accumulation of unwanted materials in an enlarged inner diameter portion of a casing or housing. In one aspect of the invention, a sleeve is disposed in the housing to isolate an annular area defined by the outer surface sleeve and the wall of the enlarged inner diameter portion. The sleeve prevents unwanted materials from being disposed in the annular area. The sleeve can later be expanded into the enlarged inner diameter portion, removed from the wellbore or destroyed. In another aspect of the invention, the sleeve is provided and disposed to cover the enlarged inner diameter portion. By covering the enlarged inner diameter portion, unwanted material is prevented from accumulating at said portion and from interfering with the expansion of the next casing into said portion to form a monobore. The sleeve can be made from materials that are dissolvable, elastically deformable, or retrievable.Type: GrantFiled: October 8, 2003Date of Patent: December 6, 2005Assignee: Weatherford/Lamb, Inc.Inventor: Alexander Craig Mackay
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Patent number: 6896052Abstract: A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion may be utilised to anchor or seal the tubing within a larger bore.Type: GrantFiled: May 15, 2002Date of Patent: May 24, 2005Assignee: Weatherford/Lamb, Inc.Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig Mackay, David Graham Hosie
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Patent number: 6820687Abstract: The present invention provides an apparatus and method expanding a portion of a tubular. The expansion apparatus is run into a wellbore on a working string. The expansion apparatus first comprises a rotary expander for expanding an expandable tubular. The expansion apparatus further comprises a spline assembly for coupling the rotary expander to a motor disposed on the work string. The rotary expander and spline assembly have hollow bodies that allow them to encircle the work string and rotate relative thereto. The spline assembly comprises an inner sleeve and outer sleeve. The inner sleeve is attached to the motor and the outer sleeve is attached to the rotary expander. The inner and outer sleeves are coupled to each other using a spline and groove connection. The connection allows the rotary expander to be rotated by the motor, while at the same time, allow the rotary expander to move axially relative to the motor. The rotary expander comprises two rows of rollers for expansion against the tubular.Type: GrantFiled: September 3, 2002Date of Patent: November 23, 2004Assignee: Weatherford/Lamb, Inc.Inventors: Patrick G. Maguire, Khai Tran, Alexander Craig Mackay, Mark Murray
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Publication number: 20040163823Abstract: There are disclosed tools and apparatus for use in expanding downhole tubing.Type: ApplicationFiled: February 26, 2004Publication date: August 26, 2004Inventors: Duncan James Trinder, Neil Andrew Abercrombie Simpson, John Strachan Nicoll, Graham MacKay, Alexander Craig MacKay
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Publication number: 20040134668Abstract: There is disclosed a method of forming a tubing lined borehole, the method comprising the steps of forming a borehole; enlarging part of the borehole by increasing the diameter thereof; and locating bore-lining tubing in the borehole with at least part of the tubing located in the enlarged part of the borehole, and a corresponding a tubing lined borehole.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Inventor: Alexander Craig Mackay
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Publication number: 20040065447Abstract: An apparatus and methods for preventing the accumulation of unwanted materials in an enlarged inner diameter portion of a casing or housing. In one aspect of the invention, a sleeve is disposed in the housing to isolate an annular area defined by the outer surface sleeve and the wall of the enlarged inner diameter portion. The sleeve prevents unwanted materials from being disposed in the annular area. The sleeve can later be expanded into the enlarged inner diameter portion, removed from the wellbore or destroyed. In another aspect of the invention, the sleeve is provided and disposed to cover the enlarged inner diameter portion. By covering the enlarged inner diameter portion, unwanted material is prevented from accumulating at said portion and from interfering with the expansion of the next casing into said portion to form a monobore. The sleeve can be made from materials that are dissolvable, elastically deformable, or retrievable.Type: ApplicationFiled: October 8, 2003Publication date: April 8, 2004Applicant: Weatherford/Lamb, Inc.Inventor: Alexander Craig Mackay
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Publication number: 20040065445Abstract: A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion may be utilised to anchor or seal the tubing within a larger bore. The buckled portion may be used to anchor the tubing within the wellbore prior to expansion of the length of the tubing into the wellbore.Type: ApplicationFiled: June 10, 2003Publication date: April 8, 2004Inventors: Neil Andrew Abercrombie Simpson, Alexander Craig MacKay, David Graham Hosie, Ken Whanger, Robert Badrak
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Publication number: 20040055754Abstract: A method of expanding tubing downhole comprises the steps of: providing tubing (14;44) of a first diameter; running the tubing into a bore (10;40); expanding a first section of the tubing to a second diameter, and expanding a second section of the tubing to a third diameter.Type: ApplicationFiled: July 9, 2003Publication date: March 25, 2004Inventors: Alexander Craig MacKay, Neil Andrew Abercrombie Simpson
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Publication number: 20040040721Abstract: The present invention provides an apparatus and method expanding a portion of a tubular. The expansion apparatus is run into a wellbore on a working string. The expansion apparatus first comprises a rotary expander for expanding an expandable tubular. The expansion apparatus further comprises a spline assembly for coupling the rotary expander to a motor disposed on the work string. The rotary expander and spline assembly have hollow bodies that allow them to encircle the work string and rotate relative thereto. The spline assembly comprises an inner sleeve and outer sleeve. The inner sleeve is attached to the motor and the outer sleeve is attached to the rotary expander. The inner and outer sleeves are coupled to each other using a spline and groove connection. The connection allows the rotary expander to be rotated by the motor, while at the same time, allow the rotary expander to move axially relative to the motor. The rotary expander comprises two rows of rollers for expansion against the tubular.Type: ApplicationFiled: September 3, 2002Publication date: March 4, 2004Inventors: Patrick G. Maguire, Khai Tran, Alexander Craig MacKay, Mark Murray